I planned to work until the day DS was born, but he came early (so I went to work that day, commuted home, and gave birth in the wee hours of the morning). with out next one (ttc soon!), I pretty much plan to do the same, assuming I remain in good health.

I was on bed rest very early with DS, mostly I couldn't stop throwing up and was working as a nursing assistant so there was no way. I'd personally give myself maybe a week if I could just because rescheduling people can be hard if you go early.

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Denise, building a life with B my farmer, Mom to L 09.2006, W 12.2006, A 04.2013, and B 09.2014 and one angel 10.24.2013

I worked with my last until 28 weeks. Constant contractions made working hard. I was having braxton hicks every 2-3 min documented at the hospital. Doctor said if I couldn't make them stop they would have to consider putting me in the hospital on bed rest. As long as I wasn't on my feet very long they only came about every hour or 2 so that was the end of working.

I worked up until labor started for both of my kids. My water broke as I was walking into work with DD, and with Dh I was on a 7on/7off schedule and labor started on my off week. I'm not wasting ANY of my maternity leave with no baby.

DS (6) I was put on bedrest at 30/6 next day, (31 weeks) he was born emergency csection. I worked the day I went on bedrest, then spent my maternity leave caring for a baby in the NICU. He got out of the hospital on the last day of my leave. I quit (they knew I was going to) and took 2 weeks off and went back to retail 2 days a week.
DD I was working retail 3 days a week, she was due on a Thursday. The previous Saturday was my last day at work. I got off at 5, went into labor at 9 but didnt have her until Monday morning.

I planned to work until the due date. I ended up taking that day off because I was starting to feel crampy. I delivered her the next day.

I think it is fine/normal to plan to work until your due date (depending on strenuousness of your job). It will keep you distracted & active. Plus I'd rather use time-off after baby comes rather than before.